by Wilkins, L.J, Wotton, S.B, Parkman, I.D, Kettlewell, P.J, Griffith, P
Published in Journal of applied poultry research (01.12.1999)

by Nicol, C.J, Gregory, N.G, Knowles, T.G, Parkman, I.D, Wilkins, L.J
Published in Applied animal behaviour science (01.10.1999)

by Wilkins, L. J., Gregory, N.G., Wotton, S.B., Parkman, I.D.
Published in British poultry science (01.08.1998)

by Dransfield, Eric, Wakefield, Diane K., Parkman, Ian D.
Published in Meat science (1992)